private void CreateTextures(CVPixelBuffer img)
{
var imageWidth = (int)img.Width;
var imageHeight = (int)img.Height;
var widthUV = (int)img.GetWidthOfPlane(1);
var heightUV = (int)img.GetHeightOfPlane(1);
this.sizeY = (int)img.GetBytesPerRowOfPlane(0) * imageHeight;
this.sizeUV = (int)img.GetBytesPerRowOfPlane(1) * heightUV;
this.cameraTextureY = new Texture2D()
{
Format = PixelFormat.R8,
Usage = TextureUsage.Dynamic,
CpuAccess = TextureCpuAccess.Write,
Width = imageWidth,
Height = imageHeight,
Levels = 1
};
this.cameraTextureUV = new Texture2D()
{
Format = PixelFormat.R8G8,
Usage = TextureUsage.Dynamic,
CpuAccess = TextureCpuAccess.Write,
Width = widthUV,
Height = heightUV,
Levels = 1,
};
this.graphicsDevice.Textures.UploadTexture(this.cameraTextureY);
this.graphicsDevice.Textures.UploadTexture(this.cameraTextureUV);
this.yuvMaterial.LuminanceTexture = this.cameraTextureY;
this.yuvMaterial.ChromaTexture = this.cameraTextureUV;
}
public static CVPixelBuffer ToPixelBuffer(this UIImage self)
{
var width = self.Size.Width;
var height = self.Size.Height;
var attrs = new CVPixelBufferAttributes();
attrs.CGBitmapContextCompatibility = true;
attrs.CGImageCompatibility = true;
var resultPixelBuffer = new CVPixelBuffer((int)(width),
(int)(height),
CVPixelFormatType.CV32ARGB,
attrs);
resultPixelBuffer.Lock(CVPixelBufferLock.None);
var pixelData = resultPixelBuffer.GetBaseAddress(0);
var rgbColorSpace = CGColorSpace.CreateDeviceRGB();
var context = new CGBitmapContext(data: pixelData,
width: (int)(width),
height: (int)(height),
bitsPerComponent: 8,
bytesPerRow: resultPixelBuffer.GetBytesPerRowOfPlane(0),
colorSpace: rgbColorSpace,
bitmapInfo: CGImageAlphaInfo.NoneSkipFirst);
context.TranslateCTM(tx: 0, ty: height);
context.ScaleCTM(sx: 1.0f, sy: -1.0f);
UIGraphics.PushContext(context);
self.Draw(new CGRect(x: 0, y: 0, width: width, height: height));
UIGraphics.PopContext();
resultPixelBuffer.Unlock(CVPixelBufferLock.None);
return(resultPixelBuffer);
}